Scientists say it may be five or six years _____ it is possible to test this medicine to human patients.
Who can you turn to in time of danger, it not .
——Which of the two books do you want?—— I want . Please show me .
Some people would rather ride bikes as bike ridding has of the trouble of taking buses.
The Parkers bought a new house, but will need a lot of work before they can move in.
——Excuse me, I want to have my watch fixed, but I can’t find a repair shop.——I know nearby. Come on, I’ll show you.