1.He is taller than I还是He is taller than me那个正确?
为啥?
2.It was not until 1920_regular broadcast began.A.whenB.whileC.thatD.since
选C,为啥?啥句式?
3_is known to us all,British English is a little different from American English.
A.AsB.It选A,这又是什么句式
望详细解释,谢谢。