10. We went through a period _____ communications were very difficult in the rural areas.
A.which | B.whose | C.in which | D.with which |
____ will do you good to do some exercise every morning.
A.It | B.There | C.Those | D.You |
The color of my coat is different from ____ of yours.
A.this | B.that | C.it | D.one |
---- Have you ever seen a whale alive? ---- Yes, I’ve seen ____.
A.that | B.it | C.such | D.one |
____ was Jane that I saw in the library this morning.
A.It | B.He | C.She | D.That |
---- Who’s that? ---- ____ Professor Li.
A.That’s | B.It’s | C.He’s | D.This’s |