问题
Has your teacher returned from America yet? –Yes, but he _______ here for only three days before his company sent him to Africa
A:was
B:has been
C:will be
D:would be
B:has been
C:will be
D:would be
正确答案是：
同类题型
How I wish I ________ in medicine instead of history when I was at college!
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lculation of the result of the exam_______ to the fact, but he failed again