问题补充:
There is some doubt Mr Zhang will sign the contract with us.
A. when
B. whether
C. if
D. that
答案:
A. when
(答案→)B. whether
C. if
D. that
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 come.。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。