To prepare for _____trip to LA， Betty is making _____list of things to take along．（　　）

A．the； theB．不填； aC．the； aD．a； 不填

Students here often do physics experiments _____small groups．（　　）

A．byB．inC．forD．at

The Three Gorges Dam produces _____for millions of people in China．（　　）

A．electricityB．influence

C．transportD．technology

Doctor Bethune sometimes had to treat the wounded on _____ own．（　　）

A．himB．hisC．themD．their

I always hate being late for school．

______（　　）

A．So am I．B．So do I．C．So I am．D．So I do．