根據(jù)句意填空：

根據(jù)句意填空：

We've never heard him sing, have we?

He's never been heard ______, has he?

One of them is a college student. ______ are middle school students.

Put the watch in the sun or in the light for five minutes, and it can go ______ for about two days.

根據(jù)括號要求寫出相應(yīng)部分:

man doctor (復(fù)數(shù)) ______

It's very kind ______ you to repair the bike for me.

介詞填空：

Who has told you that?

______ whom have you been told that?

根據(jù)括號要求寫出相應(yīng)部分:

memory (復(fù)數(shù)) ______

根據(jù)括號要求寫出相應(yīng)部分:

lie （現(xiàn)在分詞）______