Mr Chen __________ his mobile phone to the shop because it can’t work at all.
Sam is a very good man. He always tries __________ best to help others.
We will have a big test ___________ June 12th. Good luck to you.
Who is ___________ man under the tree?
More trees to protect the environment.A、must plantB、must be plantedC、should plant
Not only his parents but also he very friendly to me.A、are B、is C、be