We have a high regard for Mr. Smithbecause he always tries to _____________his principles.

I soon found that the work I was doing hadalready been done by someone else. _______, I was wasting my time.

Even　though　he　was　guilty，the＿＿judge　did　not　send　him　to　prison．

Too much drinking and smoking ______ his death.

The book _______ my husband bought in Shenzhen yesterday was very interesting.