I doubt _ David told us the truth,but they never doubt _ David is honest

分类: 作业答案 • 2022-03-11 14:45:35

问题描述：

I doubt ___ David told us the truth,but they never doubt ___ David is honest
A if;if
B if;that
C that;that
D that;if

答

当doubt后面表达的是有疑问的时候选择if 或者whether,当表达的是毫无疑问的时候用that i doubt if/whether i never doubt that 或 i don't doubt that 不知道明白了吗

I doubt ___ David told us the truth,but they never doubt ___ David is honest