A.to stay B.stayed C.stay D.having stayed
A.shouldn’tfollow B.mustn’tfollow C.couldn’t have been following D.shouldn’t have been following
A.being not invited B.not being invited C.not inviting D.not to be invited
A.any topic B.which topic C.whichever topic D.the topic he thought it
A.If being B.It is C.There is D.There being
