I ________ use a clock to wake me up because at six o'clock each morning the train comes by my house.(2012·新课标全国)
#11455
A
couldn't
B
mustn't
C
shouldn't
D
needn't
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I catch cold now and then.
#13656
A
always
B
occasionally
C
constantly
D
regularly
The ticket ______ two people to the party.
#13128
A
permits
B
admits
C
promises
D
allows
Working there is ________unforgettable experience because I gained a lot of _______.
#12505
A
a; experience
B
an; experience
C
/; experiences
D
/; experience