_____do they play football —Sometimes.

You didn’t let me drive. If we ____ in turn, you ____ so tired.

The 18th Jiangsu Provincial Games will ______ in September. Many students want to be volunteers.

After the new technique was introduced the factory produced cars in 1994 as the year before.

Fresh food is good for you . But you have to ______it first because sometimes it a little dirty.