因begin为瞬间动词，所以应用否定句。

10 Betty didn't go to see the film yesterday ＿＿＿ she was ill.

A. but B. until

C. if D. because 

［答案］ D. 

［析］ 这里是表示因果关系，所以应用because。因为她病了所以未去看电影。

11 You must start right now, ＿＿＿ you'll miss the train.

A. for B. and

C. so D. or 

［答案］ D. 

［析］ or译为"否则"。本句句意为：你必须马上走了，否则要赶不上火车了。

12 ＿＿＿ he is a child of six, he can read and write.

A. Whose B. If

C. Though D. Because 

［答案］ C. 

［析］ 这种状语从句在英语中称为让步状语从句，应译为：虽然他才是个6岁的孩子，他却可以读书和写字。

13 I like fish, ＿＿＿ chicken, ＿＿＿ eggs.

A. and, and B. and, with

C. /, and D. and, / 