问题
选择题
— You’ve made great progress in your studies of English, haven’t you?
—Yes, but much _______.
A．remains to do
B．is remained to do
C．remains to be done
D．is remained to be done
答案
C
remain作连系动词用，本身不用于被动语态，有时与不定式的被动结构构成复合谓语，意为“尚待”。如:A number of problems remain to be solved.