20.E-shopping, when properly , can save us a lot of time and energy.
A.done B.is done C.having done D.doing
19.If we go on using energy so wastefully, are that our oil wells will be dried up, before new energy sources can be found to replace oil.
A.difficulties B.chances C.questions D.problems
18.Penny sobbing at last, and dried her eyes with her handkerchief.
A.left alone B.left behind C.left off D.left out
17.---I’d have made a phone call to you, your telephone number.
---That’s all right. What was up then?
A.if I knew B.had I forgotten
C.if I hadn’t remembered D.but I forgot
16.---I want someone to write the composition for me.
---No. As a student, you depend on yourself.
A.shall B.will C.can D.may
15.---Mrs. Brown, could you please tell us why your home---cooked meat usually taste so delicious?
---Sure. The meat would be if you cook it slow.
A.the all best B.all the best C.all the better D.the all better
14.In order to the financial storm, many families cut their daily expenses.
A.prevent B.survive C.quit D.keep