A group of scientists are travelling around Africa. How many ...

[ Present Tenses ]

A group of scientists are travelling around Africa. How many countries _____ so far, I wonder?

A. have they been visiting

B. do they visit

C. they have visited

D. have they visited

Select your answer:

Random Topics:
Grammar Clauses Passive Voice in Past and Present Tense Passive Voice of Tenses Present Continuous, Present Perfect and Used to Describing Words Present Perfect and Past Simple Noun Regular and Irregular Verbs Adjective

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