WHEN YOU (GO) ____________ INTO THE OFFICE, MR. JOHN (SIT) ________...

29. - CHIA DONG TU HTD, HTTD, TLD LOP 7
CHIA DONG TU HTD, HTTD, TLD LOP 7
29.When you (go) ____________ into the office, Mr. John (sit) ____________ at the front desk.