People have always been curious ______ how living things on the earth exactly began.
| A．in | B．at | C．of | D．about |
Only by ______ your attention ______ what you are learning can you learn it well.
| A．focus；on |
| B．pay；on |
| C．focusing；on |
| D．paying；on |
______ achievement，last week's ministerial meeting of the WTO here earned a low，though not failing grade.
| A．In terms of | B．In case of | C．As a result of | D．In face of |
She wanted the comfort of a large car and the low cost of a small one，so she bought a size in between the two______.
| A．for compromise | B．as a compromise |
| C．as compromise | D．for a compromise |
He is always helping people without expecting anything ______.
| A．in need | B．in fact | C．in danger | D．in return |
I will mark ______ everything you say.It is helpful to the English learners.
| A．up | B．down | C．out | D．off |
—What were you doing when I rang you this morning?
—I was occupied ______ the housework and kept my son occupied______ his homework.
| A．at；doing | B．with；doing | C．at；to do | D．with；to do |
During the ten-day vacation, they traveled to France ______their own expense.
| A．on | B．with | C．at | D．in |
Mr. Smith sold that magnificent cottage of his on the sea _____2,000,000 dollars.
| A．at | B．for | C．to | D．by |
The customer bargained with the shopkeeper for a long time, and finally they agreed ___________ the price.
| A．to | B．with | C．on | D．at |
Isn't it very kind __________ your parents to do that for us?
A. for B to C. about D. of
The sunlight came in____________ the windows in the roof and lit up the whole room.
| A．through | B．across | C．by hour | D．each hour |
______you I owe a thousand apologies ________having doubted your ability.
| A．For; to | B．To; for | C．For; for | D．To; to |
---- Is there a vaccine _____ pig influenza?, I’m anxious to know.
----- Don’t worry, there is a vaccine _____ for pigs against pig influenza
| A．for; available | B．against ; use | C．to; access | D．against; available |
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