50. Identify the errors in the following sentences : I can't help to think it would be fun to play such an exciting game with them. [ 1分]
A.to think B.would be C.play D.an exciting
* 51. You used to smoke a pack of cigarettes a day, ______?[ 1分]
A.hadn't you B.didn't you C.do you D.will you
參考答案:1:A can't help thinking
2:c
