One of the consequences of our planet’s being warming up is a(n) ________ in the number of natural disasters.
I’ll take you to the museum ______ you may see everything _________ you want.
Is oxygen the only gas ________ helps fire burn?
The number of the people present at the concert was _____ than expected. There were many tickets left.
The silk road, _______ Marco entered China, was important for the exchange of goods and ideas.
—Would you please lend me some gas? —Sorry, I have ________ it.