1 . I don’t know w________she would come to my party or not.

2 . — I can’t decide ________ or not I should encourage my son to be a volunteer.
— Why not? It will make him more helpful.

A．that

B．whether

C．how

3 . I don’t know ________（是否） it is going to rain or not this afternoon.

4 . We should have a discussion whether ________ (travel) to Singapore or not.

5 . Oh, my god, I don’t know ________ or not I will have time to watch Jay Chow’s vocal concert(演唱会) tomorrow.

A．that

B．whether

C．whenever

D．if

7 . —I don't know ________（if）or not he will come here tomorrow.
—Don’t worry. He will come here tomorrow on time.

8 . We are not sure ________ he will come here tomorrow or not.

A．that

B．/

C．if

D．whether

9 . The documentary(纪录片) about SIP is really great. It shows ________.

A．if SIP is a wonderful place to live or not

B．when was the high-speed railway in use

C．what has the government built in open spaces

D．how people's living conditions have been improved

10 . We wonder ________ these foreigners like Chinese festivals or not.

A．why

B．whether

C．how

D．which