--The room is so dirty.____ we clean it? ---Of course.
---Where have you been? ---I got caught in traffic, otherwise I _______ here earlier.
—May I ask a question after class,sir? —____,but not during my lunch break.
The fire spread fast.Luckily the local government had brought it under control___the situation got worse.
Finnish President said Finland-China relations had progressed_______ with fruitful co-operation in new and high-tech fields.
_________ in the warm sunlight, I soon fell asleep on the sunny beach.