1.B make up是组成或占用
2.B much more dangerous 是much 修饰比较级
3.C borrow 是向别人借用,lend是借给别人使用
4.B/C continue 后面用-ing形式好 to do 意思相同
5.A 感叹句中,如果感叹部分中有名词,用what,可数单数名词前需用a
6.A 疑问句变为宾语从句时用陈述句的用词顺序,所以本题选A
In the late 1990s,some boys and girls began to perform hip-hop in public.
A.In the late 1990s,B On late 1990s C in late 1990's.