20．-How long do you want me to heat the oil?-Heat it till it to smoke．( )A．would beginB．be——青夏教育精英家教网——

20．-How long do you want me to heat the oil？
-Heat it till it _________ to smoke．（　　）

19．A Chinese basketball team employed the former NBA superstar Tracy Macready this year，________ encouraged the whole team and the fans．（　　）

18．Eating a balanced diet and getting adequate sleep are key ________ maintaining a healthy and vigorous state of life．（　　）

17．You'd better stop smoking，_______ your health will break down．（　　）

16．Ken's next-door neighbour had a party last night，______the noise kept him awake all night．（　　）

15．It's said that Matthew used to live in South California and now his home is in Italy．
That's no surprising．He prefers to live ______ the climate is mild．（　　）

14．Universal ______ to education is the ability of all people to have equal opportunity in education，regardless of their social class，ethnicity，background or physical disabilities．（　　）

13．It is an accepted ___________to pay a deposit（定金） with your order，which assures the seller that you are in fact a serious buyer．（　　）

12．His _____ of the incident approximates to that of the other witness．（　　）

11．-Tell me your secret．
-I ______．It wouldn't be a secret if I told you．（　　）

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