Hurry up! The black clouds ______that it is going to rain soon.
If ____ unsolved, the problem of food safety may lead to more serious results.
---Tom almost ran into a pole yesterday while driving on the highway. --- I suppose he ____ too fast.
Nowadays, in some western countries, coffee is ____ most popular drink, while tea comes ____ second.
–_______! We are coming late. –But I can’t find my ticket.
It’s the tsunami not the strong earthquake that has _____ great damage to Japan.