_______ he is always studying hard is well known ____ us all.
A．How, to B．What, to C．That, to D．Whether, by
I believe ______ you have done your best and _____ things will improve .
A．that.\ B．\.\ C．what, that D．\.that
What a pity ______is ________ you didn’t arrive by daylight.
A．there, because B．it, that C．it, when D．that ,for
As the day was fine ，I made the suggestion _______ for a walk in the park .
A．we go B．we will go C．should we go D．that we go
It is uncertain ______ the experiment is worth doing .
A．where B．that C．whether D．how
I’d like to work with ____ is honest and easy to get on with.
A．who B．whoever C．whomever D．no matter who
