问题
选择题
________, I think, and the problem could be settled.
A．A bit more effort
B．So long as you keep up your spirits
C．If you doubt your efforts
D．Making great efforts
答案
答案：A
考查动词形式。本题考查祈使句 + and + 陈述句，题中用省略，故A bit more effort =" Make" A bit more effort。选A。