Having never met with such a _____ problem, he felt _____ and didn’t know how to solve it.
| A．puzzling; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzled; puzzled |
The factory was built in a secret place, around ______ high mountains.
| A．which was | B．it was | C．which were | D．them were |
This is the magazine _______ I copied the paragraph.
| A．that | B．which | C．from that | D．from which |
I can never forget the day _______ we worked together and the day ______ we spent together.
| A．when; which | B．which; when | C．what; that | D．on which; when |
I don't like ______ as you read.
| A．the novels | B．the such novels | C．such novels | D．same novels |
That is the day ______I'll never forget.
| A．which | B．on which | C．in which | D．when |