To save class time, our teacher has ________ students do half of the exercise in class and complete the other half for homework. .
It was really very dangerous. One more step, ______ the baby would have fallen into the well.
It is usually warm in my hometown in March, but it ________be rather cold sometimes.
No one had told Smith about __________ a lecture the following day.
If the food tastes nice, we will buy some; if ________, ________.
The man was charged ____________ the crime of betraying his country and sentenced ________ ten years in prison.