----Dad, please open the door, it ______.
----OK, dear. I am coming.
| A．was locked | B．locks | C．is locked | D．locked |
Not until he left his home ______ to know how important the family was for him.
| A．did he begin | B．had he began | C．he began | D．he had begun |
It is reported that the newly-built studio is _______ badly.
| A．equipped | B．equaled | C．supplied | D．offered |
If you happen to get lost in the wild, you’d better stay ______ you are and wait for help.
| A．why | B．where | C．who | D．what |
All the trees are ______ with fruit, promising a harvest year.
| A．covered | B．buried | C．surrounded | D．heavy |
—Did you catch what I said?
—Sorry. I ______ a text message just now.
| A．had answering | B．have answered | C．would answer | D．was answering |