问题补充:
单选题Thereissomedoubt_________MrZhangwillsignthecontractwithus.A.whenB.whetherC.ifD.that
答案:
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 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。