In 1778, Banks was elected ________president of the Royal Society, ________position he held for 42 years.
People often have this belief ______ development is bad for the environment, but this does not have to be true.
If we ______ the other road, we might have arrived here in time for the meeting.
Jessie, my best friend _______ me of some really bad things just to hurt me. I felt betrayed.
twice a year, whether it is a car ,a bus or a truck, is the rule that every driver must obey in this city.
to his scientific research, the professor cared little about his family.