(单选题)25: The song ____________by children. A: is often sung B: was often sung C: sings D: has often sung ...

(单选题)19: Anyone ____________ a term in prison will not be hired by that company. A: serving B: to be served C: having served D: being served ...

(单选题)13: His three children ____________ now college graduates, he felt he could retire from business. A: to be B: being C: having been D: been ...

(单选题)7: Seeing the police coming, away____________ . A: the thieves ran B: had the thieves run C: ran the thieves D: did the thieves run ...

(单选题)20: After ____________ his work, he came to help me with my English. A: finished B: being finished C: finishing D: having been finished ...

(单选题)14: ____________that we went outing. A: The weather so fine B: So fine the weather is C: So the weather was fine D: So fine was the weather ...

(单选题)8: This company was the first____________portable radios as well as cassette tape recorders in the world. A: producing B: to produce C: having produced D: produced ...

(单选题)21: He could do nothing but____________for the bus____________. A: wait ... to come B: wait ... come C: waiting ... coming D: waited ... came ...

(单选题)15: When are they ____________ in their plan? A: hand B: handed C: to hand D: give ...

(单选题)9: We can go when the ground____________. A: is drying B: has dried C: dried D: dry ...