I’m sorry,the sales manager is not________.He is on the telephone at the moment.
.People have planted a lot of trees and grass in order to ____ wind and sand in the desert.
Read the passage and correct the mistakes, ______.
——Could I use your English dictionary for a few moments? —— ________.I’m not using it myself.
_______ enough is quite necessary for your health, so you shouldn’t stay up too late every day.
.Most of the citizens didn’t know what had________just now.