When deeply absorbed in work, ______ he often was, he would forget all about eating and sleeping.
| A．that |
| B．which |
| C．where |
| D．when |
A dozen ideas were considered _____ the chief architect decided on the design of the
building.
| A．because | B．before | C．whether | D．unless |
Scientists are trying to develop a special material, ________ they will make use of in
spacecraft.
| A．it | B．one | C．that | D．what |
He was absent for two weeks, so he had a lot of homework to ________.
| A．make up | B．put up | C．take up | D．pick up |
--- Do you think he will do me a favor?
--- As far as I know, he is the last one to help others. He _______ be prepared to give you a hand, though.
| A．might | B．must | C．can | D．should |
Those lovely flowers were ______ for your mother for her 57th birthday, but as she is away, I would be glad if you accept them.
| A．committed | B．intended | C．supplied | D．scheduled |