1 . _______ the water was cold, Wei Qinggang jumped into it to save others.

A．Although

B．When

C．If

2 . I don't doubt ________ she can do it well, but I doubt ________ she is willing to do it.

A．that; that

B．if; if

C．that; if

D．if; that

3 . —Have you planned your National Day holiday?
—No, I haven't, I'm not sure ________ to visit my parents.

A．that

B．whether

C．if

D．why

4 . I don’t doubt ________ he will come in the coming year.

A．whether

B．that

C．if

D．so

5 . There is no doubt ________ the Harry Potter series is very popular all over the world.

A．whether

B．that

C．what

D．if

6 . “Are you excited about going to the beach this weekend?” Linda asked me. (改写句子，句意不变)
Linda asked me ________ I ________ excited about going to the beach this weekend.

7 . Do they know the answer to the question? I didn’t know. (改为宾语从句)
I didn’t know ________ the answer to the questions.

8 . Mary问我是否可以给她买一本字典。
Mary asked me ________ ________ ________ ________ a dictionary for her.

9 . I wonder________.

A．how will we do beer	B．when will we fight the virus
C．if we will have an English competition	D．what can we do for our motherland

10 . I don't know. Did Jack finish his homework? (改为宾语从句)
I don't know ________ Jack finished his homework.