I ______the paper before my lawyer explained the details to me.
| A．signed | B．had signed |
| C．signs | D．has signed |
The father as well as his three children ______ skating on the frozen river every Sunday afternoon in winter.
| A．is going | B．go | C．goes | D．are going |
Occasions are quite rare ______ I have the time to spend a day with my kids.
| A．when | B．which | C．why | D．who |
Two middle-aged passengers fell into the sea. ______, neither of them could swim.
| A．In fact | B．Luckily | C．Naturally | D．Unfortunately |
---Waiter!
---______
---I can’t eat this. It’s too salty.
| A．What? | B．Yes, sir? | C．All right? | D．Pardon? |
A harmonious society is like a symphony — each person contributes a small sound, but when __with other sounds, it becomes beautiful music.
| A．combining | B．combined |
| C．being combined | D．to be combined |