---Whose is the pencil box? ---It ____________ be Tom’s. Look at his name on the cover!
—We can save our pocket money and donate it to those in need. —________!
The sentence structure(结构)of “He often makes me happy” is ________.
There will be ________ time left. Let’s hurry, or we can’t finish the work.
We can ________ with each other by e-mail with the help of the Internet nowadays.
Binhai RT-Mart Supermarket (大润发超市) has been open ________.