____ he drives or takes the train, he will be here on time．
| A．Whether | B．If | C．That | D．How |
The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of _____ 9-story building.
| A．the; the | B．a; a | C．a; the | D．the; a |
_____ I admit that there are problems, I don't' think that they cannot be solved.
| A．Unless | B．Until | C．As | D．While |
Jane was asked a lot of questions, but she didn’t answer of them.
| A．other | B．any | C．no ne |
D．some |
-------John and I will celebrate our fortieth wedding anniversary next month.
--------Oh, _________!
| A．cheer up | B．well done | C．go ahead | D．congratulations |
As your instructor(教师) advised, you ought to spend your time on something ____ researching into.
| A．precious | B．worth | C．worthy | D．valuable |