Excuse me,sir. Here’s a package for Lin Tao. Which room does he live in?—————.

______ he is , he will be thinking of you

felt left out at the party lastnight.––Really ____, you should havesaid something.

the first time you _______ Beijing—-No. But the first time I ______ here, the citywasn’t so beautiful.

It still puzzles today’s scientists ______ some mammals produce their young ______ others lay eggs to produce their offspring( 后代)