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A. be B. am C. is D. are

A. swim B. swimming C. swims D. are swimming

A. sit,stand B. to sit, to stand C. to sit,stand D. sit,to stand

A. took him place B. took his place

C. took of him D. became him

【題目】He is ________to reach the apple on the tree.
A.enough tall
B.tall enough
C.thin enough

【題目】They have studied in this school .
A.since three years ago
B.three years ago
C.for three years ago
D.since three years

—I have three balls.

A. How many B. How much

C. What D. Where

A. comes out B. comes up C. comes over D. comes true

A. five year old B. five-years-old C. five years old D. five-year-old

【題目】Helping others can make us very happy.
A.feel
B.feeling
C.to feel