Frank, with his two sisters, _____London by train which _____at 8:30 next morning.
The stamp on the letter is an art, from _______ we can get a lot of cultural knowledge.
It is believed that a new kind of drug ______ by the scientists and they are hopeful that they will succeed in a few months.
Jenny nearly missed the flight ________ doing too much shopping.
If you receive a bunch of roses on Valentine’s Day, do you know what hidden meaning is _______ to it?
_______ makes the people in Shanghai proud is _______ they have achieved a lot in the past ten years.