1. That question was ___ for a child to answer.

A. such difficult     B. so difficult      C. much difficult     D. too difficult

2. I ___ any difficult so far.

A.don't have   B.aren't have   C.haven't had   D. didn't have

3. More than half of the word's periodicals are printed ___ English.

A.in   B.by   C.of   D.with

Xây dựng sơ đồ mạch điện gồm 2 cầu chì, 1 ổ cắm , 2 công tắc,2 bóng đèn 220V-60W