If a=”4,” b=”5,” what’s the answer to the question “ a + 2ab +1 =?”—.

Last summer I took a course on______.

Excuse me, could you tell me ________?—There is a bank on the second floor. You can make it there.

Mrs. Lin is not only strict__________ her students but also __________ her teaching.[ ]

People in our city have raised ____________yuan for the people in the poor area.