Question

I never doubt ________ the places of interest is worth ________.

A．whether; visiting

B．that; to visit

C．whether; a visit

D．that; a visit

Answer 1

D

试题分析：doubt用在否定句中，后面接that引导的同位语从句。doubt用在肯定句中，后面接whether引导的同位语从句。注意不可以用if替换whether。句意：我从来不怀疑这个经典值得一观。短语be worth doing值得做某事，故选D。