One way for students to prevent H7N9 flu virus is to open the windows of the classroom to allow the air to _______

One way for students to prevent H7N9 flu virus is to open the windows of the classroom to allow the air to ________.

#13540

accumulate

circulate

illustrate

accelerate

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_____ we have enough evidence, we can’t win the case.

#11861

Once

As long as

Unless

Since

We don’t need to do extra work this evening. The day’s work was almost ______ now.

#13963

at the end

at an end

at one end

at our end

He didn’t ________ what I read because his mind was on something else.

#11069

hold on

catch on

take in

get over

________，everybody agrees the suggestion that the prize should be sent out to the hero by mayor.

#11954

Identical

Typical

Classical

Physical

It was so dark in the cinema that I could hardly ______ my friend.

#12454

turn out

bring out

call out

pick out

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