– I heard you gave a big surprise to your mother on Mother’s Day.– Yes. Only when I left my parents ______ how much I loved them.
As is known to all language learners, newly learnt words will soon be forgotten unless ______ used in everyday communication.
Judging from his face_______ there was a confident smile, we knew that he didn’t lose heart.
As the quality of the city’s air continues to give rise to ______, the residents are encouraged to set off fewer fireworks.
Tom’s score on the test is the highest in the class. He _____.
I’m afraid I’m not ________ to help with the talent show, for I am fully occupied with my own project.