When a pencil is partly in a glass of water, it looks as if it ______.
#90526
A
breaks
B
has broken
C
were broken
D
had been broken
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 It is strongly suggested that measures ________students to cheat in the exams.
#89242
A
be taken to prevent
B
be taken to forbid
C
are taken to prevent
D
are taken to forbid
You ______ tell Margaret --- I don’t want her to know about this matter .
#87995
A
can’t
B
mustn’t
C
needn’t
D
shouldn’t
He ______ the key, so we ______ into the office.
#88113
A
hadn’t left; can’t
B
didn’t leave; couldn’t have got
C
hadn’t left; couldn’t get
D
hasn’t left; couldn’t get