She is in a red dress..介词in在这里的意思是____
We shouldn't ____________ litter on the ground. A. throwsB. throwC. threw
What can we do to make ____________ mother earth more beautiful?A. usB. weC. our
We can plant more ____________. A. trees and grassB. tree and grassC. tree and grasses
I like to go ____on Sundays. A. fishing B. to fish C.fish
I get up ___7:oo___the morning. A. at at B. at in C.in in