—At present, one of the best ways to study is working in groups.
—More chances ___________ to students to learn from each other.
| A．offer | B．are offered |
| C．have offered | D．are offering |
After a serious illness, he finally _______ how important his health is.
| A．meant | B．realized | C．added | D．impressed |
It is our ________ to look after our parents when they get old.
| A．duty | B．habit | C．problem | D．decision |
Our teacher is very kind to us. So we regard her ________our best friend.
| A．on | B．to | C．as | D．at |
He was ill , _______he still went to school on time.
| A．but | B．and | C．or | D．∕ |
Kitty and Simon will arrive ___________Shanghai with their parents this week .
| A．for | B．in | C．at | D．on |