（ ）

(单选题)Please ______ your exam papers once again before handing the (单选题)The speed of 6G will exceed 125GB/S, ______ a new generation (单选题)—Don’t put the waste on the ground, young man.—Oh, I’m sorry (单选题)My friend invited me ______ the art club, and I accepted it (单选题)Tim told us that his company ______ robots to do some of the (单选题)It’s going to rain. You’d better ______. (单选题)In the picture, he sits ______ me, looking very happy. (单选题)At last, we decided to go swimming instead of ______. (单选题)Leave the reference books behind, ______ you won’t be able t (单选题)It is reported that the 1st Light Rail Transit ______ in our