The workers in the Huashan Mountains have to rubbish to keep the mountains clean.
I have great________in learning math and I am so worried. A.trouble B.interest C.fun
It will be hard for us to get up in the morning if we________to bed too late.
The song I Believe I Can Fly tells us that believing in________is very important.
(云南)—You look really tired.________? —I didn’t sleep well last night.I had a headache.
We’ll go for a picnic if it________tomorrow. A won’t rain B doesn’t rain C.rains