3. _______flying is more expensive than land and sea travel, I went there by air to save time.
You can arrive in Beijing earlier for the meeting __ you don’t mind taking the night train.
The old woman has loved Tom _____ he were her son.
She heard a terrible noise, ___brought her heart into her mouth.
They agreed to rent the house ______ the roof should be repaired.
The reason ___he didn’t come was ____he was injured.