_________, the Chinese government has done a lot of work, including building roads and providing better education.
A.Help the poor B.Helped the poor
C.Helping the poor D.To help the poor
I thanked my Chinese teacher _________ helped me get through the test.
A.which B.what C.who D.where
_________ it was hard to keep up with the online classes, I tried my best to follow them.
A.Whether B.However C.Because D.Although
The police ________ early on foot in order to find the truth behind the mystery.
A.cut out B.found out C.set out D.blew out
There ________ no mountain on the earth that can grow taller than Qomolangma.
A.be B.am C.is D.are
Our memories can ________ or even forgotten completely.
A.change B.changed C.are changing D.be changed
