You can________music in the music room.
—Would you like to go hiking with us tomorrow?—Sure, ________ I am busy.
Sally takes more time on her study because she believes ________ she does, _______ she’ll be.
—In my opinion, the government take _________ to deal with the drought in the three southwest province.—I quite agree with you. I took part in the contribution.
-----Do you know ______ man under the tree?------Oh, he is _______ university teacher.
Which sign represents the meaning of saving water?