20. is known to us all is that the old scientist, for life was hard in the past, still works hard in his eighties.
A.It; whose B.As; whom C.As; whose D.What; whom
19.We wanted to get home before dark, but it didn’t quite as planned.
A.turn up B.turn out C.carry on D.carry out
18.The driver’s injuries were of little worth compared with suffered by his passengers.
A.ones B.those C.his D.theirs
17.It is the usual in our school that if you spoil any material, you’ll have to pay for it.
A.order B.deed C.opinion D.practice
16.The users of this new mobile phone can check e-mails they happen to be.
A.whatever B.wherever C.what D.where
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