________she doesn't understand spoken English is obvious.

She doubts________to see her again.

Matthias: Do we have to do our homework?

Jim: I don’t really know for sure________, but I suppose we do.

It is true________the law says there is no smoking in restaurants in this city.

It is disappointing________Tom can't come. 

We need to talk more about_________for the summer vacation before July.

Her mother wonders________.

I know________you must be tired after a long journey.

The question we have to answer is________keep in touch with other team members while we are not allowed to use mobile phones.

I wonder how much________.

Ann: Are you tired?

Bethany: Why do you want to know________?

Ann: You look tired. I’m worried about you.

Can you tell me________ordering stationery? We need some more envelopes in our department.

Using noun clauses, rewrite the following sentences without changing their original meanings

E.g. Something hit Jack hard in the neck. He didn’t know what it was.

→ Jack didn’t know what hit him hard in the neck.

He shared the problem in public. This was something that he should only talk with his family.

_________has been a topic of continual geological research.