1 . _________ the extremely hot weather, we continued having classes．

A．Thanks to

B．In addition to

C．In defence of

D．Regardless of

2 . Having lived in China for 8 years, Helen has a good ________ of both English and Chinese.

A．ability

B．guidance

C．command

D．program

3 . I was going to do some shopping in Golden Eagle，but________watching TV at home because of tiredness.

A．ended up	B．took up
C．got down	D．settled down

4 . Whether by accident or ___________, he arrived too late to help us.

A．purpose

B．aim

C．design

D．chance