Middle school boys( )( )( )not to smoke.

单项选择题The class ( )( )( ) over, we had a ( )( )( )discussion.

单项选择题We specialize ( ) the exportation of Chinese light industrial products.

单项选择题The method is ( ) cheaper and safer.

单项选择题Which of the following choices is not the compulsory component of business letters?

单项选择题I would like to take advantage ( ) the discount to place an order with you.

单项选择题Which of the following is focused on writing?

单项选择题To cultivate communicative competence, what should correction focus on?

单项选择题What should a required lesson plan look like?

单项选择题Among the factors affecting a lesson plan, which of the following is human factor?

单项选择题With a deposit, you would be able to withdraw money whenever you need.