He started to learn English in 1990 and in the years ________ he kept on using it in his work.
I would have called you up for help had it been possible, but I _____ your phone number then.
On weekends when Jane comes back home from school, she eats everything in _____.
. ---Can I smoke here? ---No. On no condition _____ in the museum.
All his attention _____ on the computer game, he even didn’t notice his mother enter the room.
.The two boys are alike in age, but _____ they are as different as day and night.