We are ________ a school trip.
I didn’t know .
—What did he ask on the phone just now? —He wanted to know _______.
I never doubt ______ the science museums are worth_______.
People overweight need more water than thin people .
—I want to know ________ I can take the No. 101 bus because I need to visit my sick friend in Ganzhou.—Across from the bookstore.