—My room gets very cold at night.
—_______.
| A．So is mine | B．So mine is |
| C．So does mine | D．So mine does |
Yesterday we visited a modern hospital, around _______ some fruit shops.
| A．which is | B．it is | C．which are | D．them are |
He had thousands of students, many of ______ gained great success in their own field.
| A．whom | B．them | C．which | D．who |
He asked a lot of questions, none of ______ was easy to answer.
| A．which | B．them | C．what | D．that |
He asked a lot of questions, and none of ______ was easy to answer.
| A．them | B．which | C．what | D．that |
He told me that he had two girl-friends, neither of _______ knew anything about the other.
| A．whom | B．them | C．which | D．who |