Professor Tang didn't give us a speech today.It was ________ he had a traffic accident on the way to school.
| A．that | B．when | C．why | D．because |
One can’t be really happy if _________he enjoys doing is regarded by society as of no importance.
| A．how | B．that | C．what | D．where |
Tom does speak Chinese well, but his reading and writing skills leave much _________.
| A．to improve | B．to be improved | C．being improved | D．having improved |
We’d better take umbrellas—I’m sure it _____ when we arrive in London; it’s always wet there at this time of year.
| A．will rain | B．is raining | C．will be raining | D．would rain |
It remains unknown _____the peace talk between the two countries is going to lead.
| A．why | B．when | C．how | D．where |
—Here’s your paycheck for this month.
—Ah, that’s music _____ my ears!
| A．to | B．for | C．in | D．at |