I would rather you ______ there.
A walking B to walk C walk D walked
—What are they up to？It’s so noisy.
—Some students________a party.
| A．have had | B．are having |
| C．had had | D．were having |
Fully________to looking after three children at home，she no longer has time to enjoy the various activities in the club.
| A．attached | B．occupied |
| C．contributed | D．devoted |
—Is the letter from your mother?
—Yes.But she ________the letter herself，because she doesn’t even know one word.
| A．needn’t have written | B．can’t have written |
| C．might not have written | D．should not have written |
With the loss of labor，the old farmers ________at home had to choose less laborintensive crops.
| A．having left | B．to leave |
| C．left | D．leaving |
—Believe it or not，my sister and I are twins.
—Oh，you must have had the case________you were taken for your sister.
| A．which | B．whose |
| C．where | D．whom |