Although you may meet some difficuIties,you should never .
--- How long does it take you to do the projects?--- It _________ the survey. I’m not sure whether the survey will last long.
He has given me _________ help, so I can make such great progress in Physics.
--- My cousin Tom hardly spent any time on his subjects, did he?--- __________, so that’s why he does badly in all his lessons.
Tom said he would tell us _________.
--- Why didn’t you follow us to get on the underground?--- I tried to, but it started moving _________ I could get on it.