Zhu Zhiwen, __________ for many years to practise music, finally made his dream come true.
| A．struggling | B．struggled |
| C．having struggled | D．to struggle |
You can hardly imagine the difficulty the woman had ________ her children.
| A．brought up | B．to bring up |
| C．bringing up | D．to have brought |
—Can you believe I had to pay 30 dollars for a haircut?
—You should try the barber’s I often go next time. It’s only 15.
| A．as | B．which | C．that | D．where |
The other day, my father drove his car down at ____ I thought was a dangerous speed.
| A．as | B．that | C．which | D．what |
____ is known to us all is that the old worker, for _____ life was hard in the past, still works hard in his seventies.
| A．As; whom | B．What; whose |
| C．It; whose | D．What; whom |
----Would you permit me ____ here?
---- Sorry, we don’t permit ____ in the library according to the rules.
| A．smoking; smoking |
| B．to smoke; to smoke |
| C．smoking; to smoke |
| D．to smoke; smoking |