to the best of his ability.

I will do the washing-up. Mark, would you please do the floors–Why_______ Cindy is sitting there doing nothing.

Using this kind of hybrid, farmers are producing harvests _____ before. [ ]

Weifang is ______ city in Shandong. It’s famous for kites.

ays has passed , but I haven’t finishedhalf of the work ________,