In the group discussion, they thought up three different __________to solving the environmental problem.

Pleasant music is often played       classes to make students refreshed and relaxed for a while.

—Do you think_____ worthwhile to go all the way to Los Angles to buy that computer?—Well ,I’m going to visit some relatives, too. 

I firmly believe _____ he said at the meeting was right.

—We weren’t sure which way to go. In the end we turned right.—You _____ the wrong way. You _____ left.