You’re＿＿＿＿＿your time trying to persuade him. He’ll never join us.
| A．spending | B．wasting | C．losing | D．missing |
Some of the engines were not suitable for the work they were ________ for.
| A．intended | B．to intend | C．intending | D．being intended |
一What do you think of the film last night?
一To be honest, action films don’t ______to me much．
| A．refer | B．belong | C．appeal | D．occur |
Mary as well as her elder sister who______ Chinese at university ______ gone to China for holiday.
| A．studies; has | B．study; have | C．studies; have | D．study; has |
31. We______ on the project for three hours. Let’s have a rest.
| A．are working | B．have been working | C．worked | D．had worked |
My grandparents asked me to go and see them whenever______.
| A．I am convenient | B．I will be convenient |
| C．it is convenient | D．it will be convenient |