1. The child enjoyed _____ up the wooden bricks then knocking them down.
A. adding B. pushing C. piling D. forming
2. John was very upset because he was _____ by the police with breaking the law.
A. accused B. arrested C. sentenced D. charged
3. It isn't quite _____ that he will be present at the meeting.
A. sure B. right C. exact D. certain
C. D D
1. 1.pile up (="lay" in a pile or as if in a pile) 把......放成一堆, 堆积：pile up the books on the table (把书堆在桌子上) 。Pile up作不及物动词用, 意为“积压; (若干汽车) 相撞”：1) Perishable goods are piling up at the docks. (码头上易腐烂的货物堆积如山。) 2) Several cars piled up after ignoring the fog warning on the motorway. (由于无视高速公路上的大雾警告, 有好几辆汽车相撞。)
2.be charged with受指控犯有......; He was charged with murder. (他受指控犯有凶杀罪。)
3.I am sure that +从句。He is sure to come. =" He" is certain to come.但在it作形式主语, that引导主语从句时, 主句中表语只能用certain, 不能用sure.