Mr Li has some trouble sleeping, so dinking a glass of milk before going to bed every night is his common ．
| A．practice | B．knowledge | C．experience | D．duty |
.Either the dean or the principal ______ the meeting.
| A．attends | B．attend | C．are attending | D．have attended |
.______ was wrong.
| A．Not the teacher but the students | B．Both the students and the teacher |
| C．Neither the teacher not the students | D．Not the students but the teacher |
.“______ twenty dollars a big sum to her?” “I suppose so.”
| A．Will be | B．Is | C．Are | D．Were |
.Three hours ______ enough for us to finish the task.
| A．are | B．has | C．is | D．Were |
.Most of his savings ______ in the Xin Hua Bank.
| A．has been kept | B．is being kept | C．have kept | D．have been kept |