life will continue on the earth for millions of years to come will depend on the problem of pollution can be solved.
—Will you please tell us how you can seize the robbers? —I will spend a whole week ____ in your room to wait for their coming.
I wish there _____ no misunderstanding on this matter.
We _____ each other the best of luck in the exam.
Alexander Grantham Bell invented ____ telephone in 1876.
—You were brae enough to raise objections at the meeting. —Well, now I regret ___ that.