---John and Tom, you two clean the classroom today, _____?
---But we cleaned it yesterday.
A. do you B. will you C. didn’t you D. don’t you
Pleasant as they made it ______ in Jiuzhaogou, we felt tired after the long journey.
A. to travel B. travel C. travelled D. travelling
Although the police thought he was the most likely one, _____ they had no exact proof about it, they could not arrest him.
A. when B. until C. before D. since
As we know, _____ medical examination will help us find out health problems as early as possible.
A. common B. general C. regular D. normal
I found some old pictures at the back of my drawer which _____ memories of my childhood.
A. called in B. called up C. called back D. called for
---Is everyone here?
---Not yet …Look, there _____ the rest of our guests.
A. come B. comes C. is coming D. are coming
