【C4】A．wentB．to goC．goingD．go

—When did he go to America？—Oh, he ______ there since half a year ago.A wentB has beenC

Do you need ______ at once？A、to goB、goC、goingD、goes

Why don’t you ______ and ask your mother？A、goB、goesC、goingD、go to

Had I studied hard in high school,I______to university to study.A．wentB．would goC．could ha

That was the second time that I______ to China.A．wentB．had beenC．would goD．will go

Are you looking forward______on your vacation？A．you goB．goingC．to goingD．to go