— The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
— Oh, dear ! She ______ a lot of difficulties !
| A．may go through | B．might go through |
| C．ought to have gone through | D．must have gone through |
I thought her honest ___ I met her.
| A．first time | B．for the first time | C．the first time | D．by the first time |
I’ve seen the man dog bit you.
| A．who | B．whose | C．whom | D．that |
When ____ where he was born, Kale said he was a Londoner.
| A．asking | B．asked | C．being asked | D．was asked |
The bus ____ at six, but it arrived an hour later.
| A．should arrive | B．had arrived |
| C．should have arrived | D．must arrive |
The hotel ____ me ＄50 for a single room during one night.
| A．took | B．cost | C．charged | D．paid |