a)FALSE: “Nevertheless, other boats and planes have vanished from the area in good weather without even radioing distress messages.”
b)TRUE: “The first report about the mysterious Bermuda Triangle has been assigned to Christopher Columbus when in 1492 he sailed through the area on his first voyage to the New World.”
a)The weather can cause difficulties to navigate in this sea, with the presence of hurricanes that develop in the summer and strong storms.
b)Both researchers and insurance companies do not consider the Bermuda Triangle a highly risky place since disappearances are not more common than in other places.
a)Although / No matter how / Even though / Though / Despite the fact that ----- has solved
b)How long ----- since
c)did not take / had not taken ----- would not be called / would not have been called
d)John asked us if / whether we knew that many ships and planes had disappeared in the Bermuda Triangle.