1.

DIRECTIONS: Fill in the blanks with the correct tense forms of the verbs in the brackets. The police ____ (investigate) the robbery that ____ (take) place last week. So far, they ____ (discover) nothing and ____ (arrest) no one.

A. are investigated, took, have discovered, have arrested
B. were investigating, took, have discovered, have arrested
C. are investigating, took, have discovered, have arrested
D. were investigating, take, have discovered, have arrested
Answer» D. were investigating, take, have discovered, have arrested


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