He promised me if we_______ the game, he ________us a round of drink.

 Please don’t phone him between 1 and 3 p.m. tomorrow. He _________ a lecture then.

My wife usually saves some money by ________ the prices of everything she buys.

 — Beijing is well worth visiting. I _____ there with my parents during the holidays.— I agree. I have been there twice.

.In the near future, more advances in the robot technology _____by scientists.