I’m not good at Maths, so I don’t know _________ out this difficult Maths problem.
| A．when to work | B．who to work |
| C．what to work | D．how to work |
______of the earth is covered with water.
A. three fourth
B.threes fourths
C.three fourths
—She has been to Hangzhou before.
—_______.
A.So I have B.So have I C.Neither have I
Hurry up,_____ we will miss the first bus..
A. or B. and C.but
---Rita has been to Tokyo twice.
--- ___________ .
| A．So Lily has. | B．Lily so has. |
| C．So has Lily. | D．Lily has so. |
There are sixty teachers in our school._____ of them are women.
| A．Two third | B．Two threes |
| C．Two thirds | D．Second three |