—Oh no! We're too late.The train________.
— That's OK.We'll catch the next train to London.
A.was leaving | B.had left |
C.has left | D.has been leaving |
The following chapters provide step-by-step instructions for practical _______ of genetic (基因)engineering to agriculture.
A.applications | B.organization | C.expression | D.attention |
What a moving _____to see so many people offer help to these in danger!
A.sight | B.scene | C.view | D.scenery |
—Please let me know where David is. I couldn’t find him anywhere.
—Well, he _____have gone far—his coat’s still here.
A.shouldn’t | B.mustn’t | C.can’t | D.wouldn’t |
He should have come here earlier, but he hasn’t _____yet.
A.turned in | B.turned up | C.turned on | D.turned![]() |
—Do you mind if I borrow your dictionary?
— _________.
A.Yes,you may borrow | B.Yes,you could | C.No,help yourself | D.No,go on |