There is some doubt _________ Mr Zhang will sign the contract with us.
A.when
B.whether
C.if
D.that
网友回答
B解析考查doubt的用法。doubt用于肯定句时用whether引导同位语从句；用于否定句时，用that引导。例如：There is no doubt that...“......是毫无疑问的。”；There is some doubt whether he will e.。本题k肯定句，故用that，句意张先生会和我们签订这份协议时毫无疑问的。