Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

原形 動去式 過去分詞 現在分詞
buy
a book
wear
a jean
hurt
someone
keep
studying
swim
in a pool
lead
a class
think
a lot
sell
a book
sit
down
sleep
well