----I wonder what makes you a successful manager.
----I ______ as a waiter for five years, which contributes a lot to my today’s work.
| A．serve | B．have served |
| C．had served | D．served |
Does the teacher____ you to go home this weekend?
| A．allow | B．consent | C．agree | D．approve |
. How long do you think it is____ she arrived here?
| A．when | B．that | C．before | D．since |
To his joy, the day he looked forward to____ at last?
| A．coming | B．come | C．came | D．have come |
Mr Reed made up his mind to devote all he had to____ some schools for poor children.
| A．set up | B．setting up | C．have set up | D．having set up |
Mr Wang was much disappointed to see the washing machine he had had____ went wrong again.
| A．it repaired | B．to be repaired | C．repaired | D．repairing |