It is not ________ it is useful to study nature but he takes pleasure that the scientist study nature.
| A．until | B．though | C．because | D．since |
The English spoken in the United States is only slightly different from ______ spoken in England.
| A．which | B．what | C．that | D．the one |
The lawyer seldom wears anything other than a suit __________the season.
| A．whatever | B．wherever | C．whenever | D．however |
________ we ________ much longer, we might not even have had the spot on the rooftop.
| A．Should; hesitate | B．Was; hesitating | C．Did; hesitate | D．Had; hesitated |
I like this jacket better than that one, but it costs almost three times _______.
| A．as much | B．as many | C．so much | D．so many |
----Did Peter fix the computer himself?
-----He ________, because he doesn't know much about computers.
| A．has it fixed | B．had fixed it | C．had it fixed | D．fixed it |