新概念英语第二册1—4单元答案

Key to Pre-unit Test 4
Key structures
A
1 He missed the train because he did not hurry.
2 Although he ran fast, he failed to win the race.
3 I was so tired that I went to sleep immediately.
4 My neighbour, who went to Tokyo for a holiday, could not return home because he did not have enough money.
5 Finding the door unlocked, I went into the kitchen.
6 I bought a picture which was very valuable.
7 He walked quietly down the corridor so that no one would hear him.
8 They cleared the ground to build a house.
B
One day, a workman who was digging in a field accidentally struck a 6, 000-volt electricity cable with his spade. Although he was thrown twenty feet, he was unhurt. However, that night the neighbouring town was in darkness and no one knew what had happened.
C
a I'd(would)prefer…don't understand…doesn't matter…does that word mean…don't know…is bringing
b got…decided…began…wro