It's pity that many wild animals are now in danger．Please have pity on them since they are part of our big family．（ ）
A．a；/B．a；aC．/；aD．/；/
Through 5G，people in two different cities can even "shake hands" on the same screen．
_________（ ）
A．What a mess!B．Don't mention it．
C．With pleasure．D．Wonderful indeed．
Kunqu Opera is_____thought to be one of the symbols of Suzhou． Don't miss it during your stay here．（ ）
A．hardlyB．widelyC．suddenlyD．badly
Check what you have written_____you hand in your application form．（ ）
A．sinceB．beforeC．afterD．while
Tony， come over． What do the letters"KIT"mean in the text message？
Don't you know that， Amy？ They_____"keep in touch"．（ ）
A．search forB．ask forC．go forD．stand for