_____ he met with the difficulty did he realize the importance of group work.
| A．Even though | B．Not until | C．Only before | D．Ever since |
May I smoke?
-If you______, go and find the smoking area，please!
| A．can | B．must | C．should | D．could |
-I really don’t know how to make a good relationship with that person over there.
-Just be careful．He is really__________here
| A．everybody | B．anybody | C．somebody | D．nobody |
It is widely believed that_______respects others will be respected
| A．anyone | B．the person | C．whoever | D．who |
He was a teacher before he left his hometown
What has________ him since then?
| A．made of | B．become of | C．brought up | D．happened on |
-Jack，I believe that grand piano is just right for our living room．
-It’s great，but do you think we still have_________room for it?
| A．／ | B．a | C．an | D．the |