If you miss this chance, it may be years ____ you get another one.
| A．As | B．before | C．since | D．after |
Teachers are not happy when they find in class their students sendingto their friends.
| A．letters | B．messages | C．notes | D．information |
Although it is not our normalto give credit in our shop,this time I think we should consider the matter more closely.
| A．habit | B．intention | C．action | D．practice |
The success of her business made it difficult for her to carry out heras wife and mother.
| A．model | B．example | C．work | D．role |
Before the final examination,many students have shown
of tension.Some have trouble in sleeping while others have lost their appetite(胃口).
| A．anxiety | B．marks | C．signs | D．remarks |
Small as it is，the ant is as much a creature asall other animals on the earth.
| A．are | B．is | C．have | D．do |