.
By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t have to return.
| A．have cleaned | B．will be cleaning |
| C．will have cleaned | D．have been cleaning |
--- Will you do me the honor of dancing with me?
--- _________.
| A．That’s a good idea | B．I’d love to, but I’m wanted on the phone |
| C．Oh, it’s very kind of you | D．Thank you all the same |
Please ________ it up and you’ll succeed ________.
| A．hold; in time | B．hold; on time |
| C．keep; in time | D．keep; on time |
________ so delicious, the food in this market was sold out soon.
| A．Tasted | B．Tasting | C．Being tasted | D．Having been tasted |
--- ________ will win the first place in the relay race?
--- I don’t know.
| A．Do you think who | B．Do you think which class |
| C．Which class do you think | D．Whom do you think |
--- Do you think the weather is good enough for a field trip?
--- Yes. You couldn’t hope for ________ day at this time of the year.
| A．the nice | B．the nicest | C．a nicer | D．a nice |