—Where is Tom ?
—Well , he __________ you __________ here. Otherwise he would come down right now.
| A．didn’t know ; were | B．hasn’t known ; are |
| C．doesn’t know ; are | D．hadn’t known ; were |
I can’t say which wine is best ---- it’s a (an) ________ of personal taste.
| A．affair | B．event | C．matter | D．variety |
--- Do you want a lift home?
--- It’s very kind of you , but I have to work late in the office . I over slept this morning because my alarm clock _________ .
| A．doesn’t go off | B．won’t go off | C．wasn’t going off | D．didn’t go off |
--- How far can you run without stopping ?
--- ______________ . I’ve never tried.
| A．Don’t mention it. | B．That’s all right. | C．I have no idea. | D．Go ahead. |
The traffic on the main streets has a longer green signal than ______ on the small ones.
| A．one | B． this | C． that | D．it |
That is the only way we can imagine ______ the overuse of water in students’ bathrooms.
| A．reducing | B．to reduce | C．reduced | D． reduce |