It was in the lab___was taken charge of by our teacher____ they did the experiment.
| A．which; that | B．where; which | C．which; where | D．that;where |
--Why has he been staying at home these days?
--He ___________ since a month ago.
| A．has been out of work | B．was out of work |
| C．has lost his work | D．had left from his work |
I just don't understand_____________ that prevents so many Americans from being as happy as one might expect.
| A．why it does | B．what it does |
| C．what it is | D．why it is |
The president of the country was well______ of when he was in power.
| A．praised | B．fond | C．appreciated | D．thought |
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
| A．holds; contain | B．holds; be contained |
| C．is held; contain | D．is held; be contained |
--The two pairs of shoes are __________ the same colour.
--But they are different __________ colour.
| A．of; from | B．of; in | C．in; from | D．in; in |