______ Kitty ______ Cathy is going with you because one of them must stay at home.
#44172
A
Not only; but also
B
Neither; nor
C
Both; and
D
Either; or
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Every boy and every girl ______ that each day and each hour brings ______ duty.
#86212
A
know；their
B
knows；their
C
knows；its
D
know；its
_______ good for our health.
#43570
A
Do exercise is
B
Doing exercise is
C
Do exercises are
D
Doing exercises are
E-mail, as well as telephones, ______ an important part in daily communication.
#86209
A
isbeingplayed
B
areplaying
C
haveplayed
D
isplaying