(To wait) in the queue (for) half an hour, the old man suddenly (realized) that he (had left) the wallet in the car.（）
A: To wait
B: for
C: realized
D: had left
A: To wait
B: for
C: realized
D: had left
举一反三
- ______ in the hall for half an hour, the old man suddenly realized he had left the wallet in the car. A: Having waited B: Wait C: To wait D: Being waited
- in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. A: To wait B: Have waited C: Having waited D: waiting
- ___ in the queen for half an hour, the old man suddenly realized be had left the cheque in the car. A: Waiting B: To wait C: Having Waited D: To have waited
- 1. _____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
- ________ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. A: To wait B: Having waited C: Have waited D: To have waited