You can't imagine _____when they received these nice Christmas presents.
| A．how they were excited | B．how excited they were |
| C．how excited were they | D．they were how excited |
Some people have called ________ the worst period ever for Pop Music.
| A．1990’s | B．the 1990 | C．the 1990’s | D．1990s |
Only after he had spent several nights working on the math problem _______ to wonder whether the problem was wrongly set.
| A．that he began | B．did he begin | C．then he began | D．so that he began |
__________ David could remember, he had never said an angry word to that customer.
| A．As far as | B．As long as | C．As well as | D．As much as |
________ enthusiasm when he heard our advice, he didn’t take any notice.
| A．To lack | B．Lacking of | C．To lack in | D．Lacking |
You must have waited here for a long time, __________?
| A．mustn’t you | B．needn’t you | C．didn’t you | D．haven’t you |