Rick to play tennis, and he it’s not funny.A. doesn’t want; think B. wants;thinks C. doesn’t want;thinks
There ______ a dolphin show in the zoo tomorrow evening.
There is _____pollution and ____fishes in the river now than 20 years ago.
The sign(标志牌)made us safe.
Everyone should play a part in _____the earth.
-- ________ will Mr. Green be back? -- In a week, I think.