I have started getting up at 5:30 a.m. to study;I don’t know if I can this .
Do you know the reason _______ he was late?
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.