He arrived ___ Shanghai ___ 9: 30 ___ March 5. [ ]

My mother asked me to go shopping yesterday. In this sentence” to go shopping” is_____．

Rober is just one young oversea Chinese _____has come to visit his ancestor’s homeland.

(2009江苏南京调研)一Was it in the village_______we used to live in_______the accident happened?

Mike wants to know if ________ a picnic tomorrow.—- Yes. But if it ________, we will visit the museum instead.