Please read it and give the answer ______ the question.

stronauts return to the earth’satmosphere, helicopters fly to________they would land, ready to collect them.

He _____ have fallen asleep last night because he didn’t hear the phone call.

Hardly __________ the Shanghai Expo_________ we realized we forgot our ID cards in the room.

______useful dictionary for beginners ofEnglish! Where did you get it?