Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
A.it, it | B.what, what | C.it, what | D.what, it |
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Unless you have planted something, you won7t be able to know the pleasure of watchintit _______
A.grown | B.growing | C.to grow | D.to be grown |
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Jim has_______so much weight that many of his clothes don't fit him any more.
A.won | B.put | C.achieved | D.gained |
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Hardly_______when the fans began to scream with excitement.
A.the star showed up | B.did the star show up |
C.had the star showed up | D.the star had showed up |
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Tom_______at least three coffees every day until his doctor told him to limit it to one.
A.had drunk | B.drank | C.has been drinking | D.has drunk |
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He is opposed to the project for the reason_______ it is not practical for the time being.
A.why | B.what | C.because | D.that |