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 I really don’t know____________.
#50551
A
how to do
B
what to do
C
what should I do
D
how I should do
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 —Could you tell me when________ in Bangkok? —Sorry, I don’t know. I even want to know what to do when  ________.
#49020
A
to arrive, to arrive
B
arriving, to arrive
C
to arrive, arriving
D
should we arrive, arriving
Don’t forget      the lights when you leave.
#50822
A
to turn on
B
turn on
C
to turn off
D
turning off
There ________ a potato and two tomatoes on the table．
#50829
A
is
B
are
C
has
D
have
He is afraid of ________ English in public.
#49891
A
speak
B
speaking
C
spoken
D
speaks
He is very serious. No one can make him___.
#50906
A
laugh
B
laughs
C
to laugh
D
laughing