____ popular festival Halloween is in North America!（ ）
A．WhatB．What aC．HowD．How a
I ___ our English teacher in the supermarket yesterday．（ ）
A．meetB．metC．have metD．has met
He spent two hours his mother with housework last Sunday．（ ）
A．helpingB．helpedC．to helpD．help
I think Jay Chou's "Mojito" is____ than his last song．（ ）
A．more betterB．the best
C．much betterD．more good
will the first tramcar （有轨电车） line be finished in Huangshi？
In two or three years．（ ）
A．How longB．How soonC．How oftenD．How far
The last satellite of BeiDou Satellite Navigation System （北斗卫星导航系统） was successfully launched on June 23rd，2020．
exciting news it is!（ ）
A．WhatB．What anC．HowD．How an