He started to learn English in 1990 and in the years ________ he kept on using it in his work.
---I find reading comprehension the hardest in learning a foreign language. ---Well, you’d better practise reading short passage every day.
---How can I get to the island you mentioned? ---You can’t get there by swimming.
the end of last term, every student in the school, I think, has taken at least five maths tests.
Look out the traffic when crossing the road.
The bridge is 1000 meters length.