题目内容

Fangfang ____ her homework last night.

A. does
B. do
C. doing
D. did

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I like both swimming ____ skating. They are so cool!

A. or
B. and
C. but
D. so

Yesterday was my birthday and I ____ a lot of gifts.

A. receive
B. receives
C. received
D. receiving

（10）等腰三角形不可能是钝角三角形。（）

（9）三角形的两边之和小于第三边，两边之差大于第三边。（）