What worried the woman most was ______ to visit her sick son in hospital.

As the clock _________ nine, players _________ their positions and the match began.

Einstein liked Bose’s paper so much that he his own work and translated it into German.[ ]

Marie Logan likes designing solar racing cars. She_____ five or six different cars so far. [ ]

Now _______ you have to do is to admit your mistakes and immediately correct them.