Mary looks great________the pairs of trousers.

• A、in

• B、by
  

• C、on

• D、at

S: I’m sorry. Professor Johnson is not here at the moment. This is his assistant, Sally.  _____52_____?

What did the USDA find about lunches in most American schools in 2008?

• A、They were mostly fruits and vegetables.

• B、They contained too much fat and salt.

• C、Most of them were canned food.

• D、Most of them were healthy.