____under the tree was a charming girl aged about seventeen or eighteen.
Though he started late,Mr.Guo played the piano as well as,if______,Miss Liu.
—Could I use your computer for a few moments,please?—_______.I’m not using it myself.
—Ouch!You hurt me!—I am sorry.But I___any harm.I___to drive a rat out.
I don’t mind her criticizing me,but___is how she does it that I object to.
Experts have been warning___of the health risks caused by passive smoking.