1．It is __illegal__(legal) to drive after drinking alcohol in most countries.
2．__Misleading__ (lead) advertisements are not allowed by law.
3．It is __unreasonable__(reasonable)to stick to this absurd proposal.
4．You must be __illiterate__(literate) if you have not heard of Shakespeare.
5．There exists the __imbalance__(balance) between the rich and poor countries.
6．Her illness had made her completely __immobile__(mobile)．
7．His identity is __unknown__(know) to us so we have to confirm.
8．He seems to be __unaware__(aware)of the trouble he is making.
9．Jim is __impatient__(patient)with his little sister who is so noisy.
10．The __unexpected__(expect)death of her son made her sad.
11．Running a business without a budget(预算) is __impractical__(practical)．
12．The government __disclosed__(close) that another ambassador had been arrested for spying.
13．The bright dress is __improper__(proper)for a funeral.
14．This delay was __unavoidable__(avoidable)so we had to be patient.
15．His income is __inadequate__(adequate) to meet his basic needs and he has to find another job.
16．Students get a __discount__(count)of 25% on plane tickets.
17．The water is __unfit__(fit)for drinking and you have to go without water.
18．It's __dishonest__(honesty)to lie about one's age.
19．The injured man was __incapable__(capable)of walking, so he had to be carried.
20．He was __unable__(ability)to sleep at night because of his anxiety.
1．The Chinese people are very __friendly__(friend) to foreigners.
2．I think it'll be __sunny__(sun)this afternoon.
3．David moved __cautiously__(caution) forward.
4．Without reform, social and economic problems can only be __worse__(bad)．
5．The teacher gave them __instructions__(instruct)to arrive early tomorrow morning.
6．Excessive dosage(剂量)of this drug can result in __injury__(injure)to the liver.
7．“Thank you.” is a polite __expression__(express) which is widely used in English.
解析：a polite expression表示“一种礼貌的表达”。
8．He __bravely__(brave)went into the burning house to rescue the baby. Everybody present praised him for his __bravery__(brave)．
9．Most Chinese like drinking tea, while __Americans__(America) like coffee.
10．More and more people go in for sports in modern __times__(time)．
解析：in modern/ancient times“在现代/古代”，为固定搭配。
11．Nice to meet you, Tom. Did you have a good __flight__(fly)?
12．Too much hunting __endangered__(danger) many species in the past.
解析：动词作谓语，根据in the past可知用一般过去时。
13．Harry Potter is a boy who is full of __imagination__(imagine)．
14．After __graduation/graduating__(graduate), he left China for America for further study.
15．If you want to go __traveling__(travel), you'd better get everything ready in advance.
16．Which means of __transportation__(transport) will you use if you travel to Beijing?
解析：means of transportation“交通方式”。
17．You should assume that the __winners__(win) would receive big money but they only got a certificate.
18．__Surprisingly__(surprise), he should lose his temper in public.
19．__Unexpectedly__(expect), the injured athlete came first in the 100－meter dash.
20．The fish is a bit __smelly__(smell). We can't eat it.
21．Look up the __meaning__(mean)of the word in the dictionary.
22．New __scientific__(science) discoveries are being made at an increasing speed.
23．The mother __undressed__(dress) her baby and gave it a bath.
24．The scenery of Zhangjiajie is so __attractive__(attract) that many tourists go there every year.
25．The farmer was bitten to death by__poisonous__(poison) snakes.