—Can you tell me ________? —Sure. I go swimming twice a week.A. how often do you go swimmingB. how often you go swimmingC. when you go swimming
----Shall we go out for a picnic tomorrow? ---- ____________.
I’m so excited. I can’t __________ visit the Summer Palace.
Yesterday, Uncle Green arrived _____ Paris.
Some people are walking _______ the bridge and some boats are going _______ the bridge.
_______ beef do we need to buy?