It's said that within five years cars will be a lot ____in our country.
But for the help of John,he___last night
There was no taxi that day and I could do nothing but___there for another night
The problem is___but easy.I can’t work it out
The number of guests invited to the party___fifty,but a number of them ___absent for different reasons,which made him very disappointed
Animals often seem to know___that an earthquake is coming,and they show their fear by acting in strange ways