Question

I forgot his phone number that day.I had to ___ the phone book to find it.

A．look up

B．look through

C．look to

D．look at

Answer 1

B

look through意为：粗略地翻阅; 细审…。look up意为：抬头看2.生意、某人的情况等 好转；改善3.拜访(某人)4.查找。