空心率（）的砌块为实心砌块。 A.≥25% B. C.≤30% D.>30%

Before Christmas Mr. Smith broke his right leg and had to stay in hospital. When he was there, he always asked his doctor when he could go home. He didn't like to spend Christmas in hospital. Though the doctor did his best, Mr. Smith didn't get better. So on Christmas Day he was still in hospital. He spent a bad day in bed thinking that he missed a lot of fun on such a happy day.
The next day the doctor told him that he might be well enough to leave hospital in time for the New Year. Mr. Smith was very happy to think that he would spend New Year's Day outside hospital. Soon Mr. Smith left hospital and on New Year's Eve he went to a party. He enjoyed himself there. But he drank too much. On his way home that night, he had a fall and broke his left leg. What an unlucky man he was！
小题1:Mr. Smith spent Christmas Day in hospital because ______.

A．he like to

B．his wife told him to

C．he broke his left leg

D．he had to

小题2:He had a good time on ______.

A．Christmas’ Eve

B．Christmas Day

C．New Year’s Eve

D．New Year’s Day

小题3:Because ______, he drank so much on New Year’s Eve.  

A．he was too happy

B．both of his two legs got well

C．he had a fall

D．he was in hospital

小题4:Mr. Smith would have to spend New Year’s Day ______.
A．at home
B．at a party
C．in hospital
D．outside hospital