1 . The sports meeting will be postponed until June 2^nd, _________all the people are available.

A．which

B．whose

C．when

D．that

2 . The human has entered the AI era, ________ robots are used in ordinary life, bringing great convenience to people. (用适当的词填空)

3 . The National Day falls on October 1st, ______ he was born. （用适当的单词填空）

4 . Between the two parts of the concert is a break, ____________ the audience can buy ice-cream. (用适当的词填空)

5 . 阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

last Thursday,   there was a   big fire in a big shop in our city. At 8:16 that morning,    1     the employees were working   busily in the 4-storeyed building, heavy smoke was seen     2     (come) out of the windows on the second floor. The fire lasted nearly an hour, and the majority of the 345 employees managed     3     (escape) from the fire. Unfortunately, 7were killed, and 23 injured, lightly or seriously.

Some workers     4     (complain) that aids came too late,     5     the firemen did come just 10 minutes after the fire was reported. To rescue everyone from the burning and smoking building in such a short time was too difficult. The only two exits of the big building were not enough for so many people to withdraw in    6    hurry.

The reason of the fire, according to an investigator, was       7     someone broke the non-smoking rule in the factory, because some cigarette   ends     8       (find). Next two weeks, 15 inspection teams will be working in all the factories     9     turn, aiming to clear away the possibility of more fires.     10    (hope), no disasters like this will happen again.

6 . We will put off the picnic in the park until next week, ________ the weather may be better.

A．that	B．where
C．which	D．when