—How long do you expect it______before the Africans can keep the disease under control? —As soon as possible.

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问题 —How long do you expect it______before the Africans can keep the disease under control? —As soon as possible.

选项 A、being
B、be
C、will be
D、has been

答案C

解析 本题考查固定句型。 “it will be+时间段+before…”为固定句型,表示“要过多久才……”。也可用于“It+may be+时间段+before…”句型,表示“也许要过多久才……”。故答案为will be。
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