請教一題多益填空題 - 自學

題目出自Longman advanced Test 2

Mrs. Prashar can always tel when her husband __D___
too much coffee because his hands start to shake.

A)will have drunk
B)had drunk
C)is going to drunk
D)has been drinking

請問(A)和(D)是什麼時態啊??
用在什麼時候呢??
謝謝~~~

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