As time went by, the plan I stuck ______ fairly practical.
| A．to was proved | B．to proving | C．to proved | D．to be proved |
One of the requirements for a fire is that the material _________ to its burning temperature.
| A．is heated | B．be heated | C．would be heated | D．shall be heated |
In the USA, _______ Thanksgiving Day is a harvest festival. Traditionally, it is _______ time to give thanks for the harvest and express gratitude in general.
| A．the; a | B．/; the | C．/; a | D．the; the |
—It’s hard to believe that Jack ________ have fought with the policeman.
—Yes. If one ________ ask for trouble, it can't be helped.
| A．would; will | B．must; may | C．should; must | D．need; dare |
___ you lose the paper document, sign in www. Sina.com, __ you might download all you need.
| A．If, which | B．So long as, what | C．In case, where | D．Even if, as |
When you read the book, you’d better make a mark _____ you have any questions.
| A．at which | B．at where | C．the place | D．where |