—Would you please ______ the door for me? （   ）
—No problem.

A．to open

B．open

C．opening

连线
1.遇见

A．this 2.这

B．teacher 3.教师

C．meet 4.你，你们

D．new 5.新的

E．too 6.也

F．night 7.晚上

G．you

You can _______ it. (   )

A．to do

B．doing

C．do

用所给单词的适当形式填空。
【小题1】Water is very________(use).
【小题2】We use wood________(make) chairs.
【小题3】Trees help________(keep) the air clean.
【小题4】________(protect) the Earth, we should________(save) water.
【小题5】Look! They________(do) a project.
【小题6】Please tell________(they) about Christmas.
【小题7】He starts________(sing).

Robot will help us ____ books in the library.  （    ）

A．find

B．finds

C．finding