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--- You look ______,Paul. What’s the matter?--- I’m having trouble ______ math.
#51056
A
tired, to learn
B
worried, learning
C
frustrated, to learn
D
angrily, learning
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The boy often forgets        his homework. So his teacher is angry
#49591
A
does
B
to do
C
doing
D
did
 We have two rooms        but I can’t decide     .
#48399
A
to live;choose which one
B
lived;choose which one
C
to live in;which one to choose
D
live;which one
—Shopping with me?—Sorry. I have a lot of clothes________.
#50971
A
to wash
B
washed
C
wash
D
washing
I think ________ vocabulary lists ________ us a lot.
#51018
A
make, help
B
making, helps
C
makes, helping
D
making, help
---I often chat with my friends on the Internet.---You are so smart! Will you please tell me ________?
#49449
A
how to do
B
how to do it
C
how to use
D
when can I use it