in the ticket hall for almost an hour, I suddenly realized I had left my ID card home.
| A．To wait | B．To have waited | C．Waiting | D．Having waited |
As we have known from the map of the world, this is ______.
| A．twice as larger as that island | B．as twice as that one |
| C．twice as large an island as that one | D．twice as a large island as that one |
_______from media reports，the result has been unclear.
| A．To judge | B．Having judged | C．Judging | D．Judged |
Listen! Do you hear someonefor help?
| A．calling | B．call | C．to call | D．called |
She can’t help ______ the house because she’s busy making a cake.
| A．to clean | B．cleaning | C．cleaned | D．being cleaned |
When and where to build the new factory ____yet.
| A．is not decided | B．are not decided | C．has not decided | D．have not decided |