The old man bent with a heavy _______ on his back.
| A．pressure | B．responsibility | C．force | D．burden |
______ the growing number of patients, the clinic had to extend its service from five days to seven days a week.
| A．To accommodate | B．Accommodating |
| C．Being accommodated | D．Accommodated |
It remains ______ whether she’ll be fit enough to play in the finals.
| A．to see | B．to be seen | C．seeing | D．to have seen |
Dad had to cycle to work this morning because his car _______ at the garage.
| A．was repaired | B．was repairing |
| C．was being repaired | D．would repair |
John passed the examination though he had only spent _______ on the subject as others had done.
| A．as half time much | B．as half much time |
| C．half as time much | D．half as much time |
He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s.
| A．at once | B．the moment | C．for the moment | D．in no time |