As long as I can remember, _______ I called, my son would answer.
| A．before | B．any time | C．until | D．while |
______ from the space, you will find the earth is blue.
| A．Seen | B．Seeing | C．See | D．To see |
He was about to go out for a walk _____ his teacher came to visit him.
| A．while | B．which | C．when | D．then |
I will never forget ____ to country village to see the poor children of my age.
| A．to take | B．to be taken | C．taking | D．being taken |
— Alice , would you like to see the 3D film with me tonight ?
— ________ , I’d rather stay at home reading some novels .
| A．I’m with you on that | B．Let’s get going |
| C．It isn’t my cup of tea | D．What’s going on |
I noticed her eyes ______, because they were very large and beautiful.
| A．in general | B．in particular | C．in all | D．in vain |