HOW TO PLAY:
- Type in the correct tense of the verb in the spaces.
- Click the button at the bottom to check your answers.
- Press the "refresh" button on your browser to play again.
become be break dock bring be have work be see
regard regard separate be tie put use use differentiate constitute
regard regard separate be tie put use use differentiate constitute
Back to the astronaut, cosmonaut, taikonaut lesson.