题目内容

Look at the boy. He ___ on the desk.

A. stand
B.is standing
C. stands

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Look! Jimmy with her mother ___ over the bridge.

A. is walking
B. are walking
C. walk

— Where’s Tom?— He ___ his homework at home.

A. do
B. does
C. is doing

Two boys and their mother ___ under the tree.

A. are sleeping
B.is sleeping
C. are sleep

Mary is swimming ___ the river.

A. to cross
B. crossing
C. across