. They were surprised that a child should work out the problem _____ they themselves couldn't.
| A．once | B．then | C．while | D．if |
The restaurant wasn’t ________ that other restaurant we went to.
| A．half as good as | B．as half good as | C．as good as half | D．good as half as |
—I have a headache.
—I’m not surprised you ________ in front of the computer for too long.
| A．work | B．are working | C．have been working | D．had worked |
I have told you the truth. ________ I keep repeating it?
| A．Must | B．Can | C．May | D．Will |
I had been working on math for the whole afternoon and the numbers ________ before my eyes.
| A．swim | B．swam | C．swimming | D．had swum |
I am blessed with a great class, ________everyone is hardworking, kind and friendly to each other.
| A．one where | B．the one that | C．the one where | D．one that |