_____the new computer, travelers at the offices of CAAC can now buy their air tickets much faster.

The computer is important to the air line because ______. A: it sells tickets B: it writes out tickets C: it gives the information needed D: it knows when a plane takes off.

I think it essential _______ the air tickets in advance. A: reserve B: to reserve C: reserving D: having reserved

He telephoned the travel agency to ______ three air tickets to London. A: order B: arrange C: take D: book

He telephoned the travel agency to ______ three air tickets to London. A: speak B: arrange C: take D: book

___________ the new computer, travelers at the offices of CAAC can now buy their air tickets much faster. A: Because B: Thanks for C: Thanks to D: Since

_____ the new computer, travelers at the offices of CAAC can now buy their air tickets much faster. A: Because B: Thanks for C: Thanks to D: efficiently

You can book two air-tickets from the operator with the switchboard.

_____ the new computer, travelers at the offices of CAAC can now buy their air tickets much faster. A: Because B: Thanks fo C: Thanks to D: efficiently

_____ the new computer, travelers at the offices of CAAC can now buy their air tickets much faster. A: Because B: Thanks fo C: Thanks to D: Since