当你不认识某物时,你应用英语向别人问 A. What’s this ? B. What this is ? C. This is what ?
—Do Lucy and Lily ____ bikes? —Yes. Lucy ____ a new bike, but Lily doesn’t.
—What color is the T-shirt? —It’s ____.
—Is it your dress? —No. It’s ____.
—We really shouldn’t use plastic bags any more when shopping. —_____ It’s important to protect our environment.
—Our country _____ progress in science and culture in recent years.