Students in English-speaking countries usually address their man teacher ‘sir”, but __________ their woman teacher “madam”.
| A．seldom they address | B．do they seldom address |
| C．seldom do they address | D．they seldom do address |
. —Where have you been all day?
—I _______ some former classmates and I couldn’t get back until it was dark.
| A．have met | B．would meet | C．met | D．had met |
. —He is eager to try something he has never tried before.
—Oh, I see. That’s _______ he’s different from others.
| A．when | B．what | C．how | D．where |
As your teacher, I could not have you ______ away with cheating in the exam.
| A．get | B．getting | C．breaking | D．break |
Going abroad to study requires a big adjustment and it usually takes a while to .
| A．calm down | B．fit in | C．keep up | D．cheer up |
Failure can make a positive contribution to your life _______ you learn to use it.
| A．since | B．unless | C．until | D．once |