GO ON, ASK AS MANY QUESTIONS AS YOU CAN

31. - ENGLISH 9 BAI TAP TRAC NGHIEM NANG CAO
ENGLISH 9 BAI TAP TRAC NGHIEM NANG CAO

31. Go on, ask as many questions as you can. I don’t mind ...all.

a. to answer them b. answering them

c. to be answered them d. being answered them