John is not very — he often forgets what he promises to do.
| A．flexible | B．reliable | C．confident | D．honest |
Keep an optimistic and positive attitude — Don't put yourself to any _____
| A．mood | B．impression | C．effect | D．bother |
It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.
| A．which; which | B．that; that | C．that; which | D．which; that |
After he retired, he keeps on taking exercise to kep fit______a good diet.
| A．except | B．in addition to | C．but for | D．other than |
Passengers are ______to look out of the window when the train is moving.
| A．forbidden | B．kept | C．prevented | D．banned |
Jane is honest and never tends to hide her opinion. She must give you a(n) _____suggestion about it.
| A．abrupt | B．ambiguous | C．straightforward | D．hesitant |