AFTER SHE HAD SPENT THE WHOLE MONTH STUDYING THE EFFECTS OF DEFORESTA...

Câu 35: After she had spent the whole month studying the effects of deforestation, she collected enough data. A. After she collected enough data, she spent the whole month studying the effects of deforestation. B. She had collected enough data but she still spent the whole month studying the effects of deforestation. C. Having spent the whole month studying the effects of deforestation, she was collected enough data. D. Having spent the whole month studying the effects of deforestation, she collected enough data. Read the passage and choose the correct word or phrase that best fits each blank from 36 to 40. If your reservations are booked far enough ___(36)___ of time, the airline may offer to mail your tickets to you. However, if you don't receive the tickets and the airline's records show that they mailed them, you may have to go through cumbersome lost-ticket procedures. It is safer to check the telephone ___(37)___ for a conveniently located travel agency or airline ticket office and buy your tickets there. As soon as you receive your ticket, check to make sure all the information on it is correct, especially the airports (if any of the cities have more than one) and the flight dates. Have any necessary corrections ___(38)___ immediately. It's a good idea to reconfirm your reservations before you start your trip; flight schedules sometimes change. On international trips, most airlines require that you reconfirm your onward or return at ___(39)___ 72 hours before each flight. If you don't, your reservations may be canceled. Check your ticket as you board each flight to ensure that only the correct coupon has been removed ___(40)___ the airline agent.