A. undertaken B. attempted C. bothered D. hesitated

【C8】A．troubleB．botherC．hesitateD．remember

A. injureB. bother C. attackD. destroy

A. attempting B. missingC. planning D. enjoying

A. inspected B. attempted C. witnessedD. challenged

The short trip does not bother passengers who wan

Whats the finding of the research undertaken at Carnegie Mellon University?A.People spend