To study biology has ___much of my spare time, but it has given me a lot of fun.

—What’s the best way to ____ the disease caused by biting insects?——Ah, don’ t bite any!

.It was the boy, rather than his brothers, that _________ for what they had done.

Since entry into high school the students have been ________ staying up late in the evening and getting up early in the morning. 

He pretended to be Japanese, but his Chinese accent      him   .