61. If you have to plough the field anyway, you _____ as well plant crops at the same time.
You must have waited here for a long time ,___________you?
Nearly________ of the surface of our planet is covered by water.
We had ___________ wonderful time_________the party_______ other day.
—What do you think of your nephew? —He__________ be very naughty but at the same time you poor.
The manager decided to give the job to ___ he believed had a strong sense of duty.