Professor Smith，along with his assistants， on the project day and night to meet the deadline.
| A．work | B．working | C．is working | D．are working |
―How are things going?
―The disabled _______ no relatives in Guangzhou _______ by the volunteers, who will graduate from Zhongshan University next year.
| A．with; are taking care of | B．have; will be taken care of |
| C．with; are being taken care of | D．have; are being taken care of |
Just after putting the baby onto bed, Mrs. White suddenly caught sight of the pet cat and didn’t know how long it________ on the table for the family dinner.
| A．had been laying; lying | B．had been lying; laid |
| C．had been laid; laid | D．had lain; laying |
In 1960, this was the longest bridge that __________.
| A．was ever built | B．had ever built |
| C．has ever been built | D．had ever been built |
―The telephone is ringing.
―I _________ answer it.
| A．will | B．am going to |
| C．am to | D．am about to |
In warm weather fruit and meat ________ long.
| A．don’t keep | B．can’t be kept |
| C．are not kept | D．aren’t keeping |