--Who is your new secretary?
--Miss Evens. I’m very pleased with the work that she _________ so far.
| A．are doing | B．did | C．were doing | D．has done |
Since you understand all this, is no need for me to explain.
| A．it | B．this | C．that | D．there |
—Is there any vaccine(疫苗) against H1N1 flu that can be used on humans?
—No, but scientists are working to develop ________ .
| A．that | B．it | C．one | D．so |
Betty, still ______ excited, took away the box ______ with birthday presents for her.
| A．looked; filled | B．looked; filling | C．looking; filled | D．looking; filling |
--- I think it necessary that he _____ to New York but to London.
--- I agree, but the problem is _____ he has refused to.
| A．will not be sent; that | B．should not be sent; what |
| C．not be sent; that | D．should not send; what |
you be interested, I’ll tell you the whole story.
| A．Would | B．Might |
| C．Should | D．Could |