[ Grammar TOEFL ]
Being lost, the tourist stopped _____ at his map for the place they wanted to visit.
A. looking
B. he looked
C. to look
D. looked

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Tenses and Passive Voice › View. By 2030, scientists _____ on a cure for this disease for decades.
A. will have been researching
B. will be researching
C. will have researched
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Grammar › View
The talk show ………. interviewed an actor from the new film.
A. guest
B. speaker
C. announcer
D. host
