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When it comes to giving his kids the education they deserve, the 51-year-old father knows he never _______ college without financial aid.

A．could have attended                     B．could attend

C．had attended                          D．should have attended

Look at the trouble I am in! _______I had followed your advice.

A．Only if            B．If only            C．Even if            D．So long as

After the war, a new school building was put up ______there had once been a theatre.

A．when             B．in which           C．the place where    D．where

After decades of effort, the city is still trying to _____ how to stop smoking in public places.

A．try out            B．let out            C．figure out         D．run out

One of the rules is that under no circumstances _______to bring food, drink or chewing gum into the school.

A．students are allowed                     B．a(chǎn)llow students

C．a(chǎn)re students allowed                     D．students be allowed

Go and join in the party. Leave______ to me to do the washing-up.

A．it                B．that              C．this              D．one

—Do you think the thief entered through the back door?

—No, if he had, I don’t believe he ______ the living-room window.

A．would break       B．broke            C．would have broken  D．had broken

Nobody knows _______broke into the house last night and stole the important papers.

A．who was it that     B．it was who that      C．who it was that     D．that it was who