The moon is the earth .
| A．as big as forty-nine times | B．forty-nine times bigger than |
| C．as big as one-third | D．one-third the size of |
This time next week I __________ to Guangzhou to attend a meeting with my manager.
| A．will fly | B．am fly |
| C．shall be flying | D．fly |
The doctor will not permit mother up __________ her leg is better.
| A．if | B．until | C．when | D．unless |
Either his wife or his friends __________ his birthday party.
| A．has attended | B．have attended |
| C．attends | D．is attending |
No one knows __________ it will be fine tomorrow and __________ we can play basketball together.
| A．whether; whether | B．that; whether |
| C．whether; that | D．that; that |
Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
| A．to cover | B．to be covered |
| C．to have covered | D．to have been covered |