Nobody knows how people first came to these islands. They _____ from South America on rafts.
#87576
A
ust have sailed
B
an sail
C
ight have sailed
D
hould have sailed
推荐题目
—Guess what？ I have got A for my term paper.—Great!You _______ read widely and put a lot of work into it.
#87247
A
must have
B
should
C
must
D
should have
Tony ____ the invitation, otherwise he would have attended your birthday party.
#86508
A
couldn’t have received
B
mustn’t have received
C
needn’t have received
D
shouldn’t have received
—Will you read me a story, Mummy? —OK．You have one if you go to bed right away．
#87432
A
will
B
might
C
shall
D
could