This case is too heavy. Could you _____ me a favor?A.to do B.doing C.do
Recycling is good,so don't________bottles or newspapers.
—It’s hot today,isn’t it?—Yes,it is.Why not________your jacket?
—Please________the tap if you don’t use water.—OK.It’s a way of saving energy.
Though he is________at home,he doesn’t feel________for he has many things to do.A.alone;lonelyB.lonely;aloneC.alone;alone
(河南)—Do you climb mountains every day?—Yes,________a little exercise.I’m so out of shape.