【题目】Mathematics _______ the language of science.

【题目】Nothing but several glasses ________ bought by my father the day before yesterday.

【题目】No matter ________ hard it may be，I’ll carry it out.

【题目】A wonderful idea ________ me that day when I met with a tough problem，.

【题目】Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.

【题目】—May I go and play with Dick this afternoon, Mum?

【题目】If law and order ______, neither the citizen nor his family is safe

【题目】

【题目】It's management that's at fault _________ the work-force.

【题目】There _____ a lot of rubbish on the floor so I asked Mary to sweep _____ up.