Listen! Can you hear boy ____ in the next room?A. sing B. to sing C. singing
The busier he is, the he feels.
My parents didn’t know ____ dinner with them next Sunday.
– We really shouldn’t use paper napkins, you know. -- I know. I stopped _____ last year.
-- How is the shopping mall? -- It’s really great. It’s _____ fascinating _____ interesting.
I really had a hard time last year, for I am getting _____ each month.