If everyone makes a ___________ to protecting the environment, the world will become much more beautiful.
The children were made ____ homework first. A.doB.to doC.did
– How long has Mr. Green been in Beijing? -- It ____ half a year since he ____ there. A. is; moved B. was; move C. was; moved
Usually soft colors make people ______. A.relaxingB.relaxedC excited
—We can use QQ to talk with each other on line. —Really? Could you please show me ____________it? A. how to doB. what to do C. when to do
When we got to the theatre, the play _______ for five minutes. A.had been onB. had begunC. was on