Two explosions near the finish line of the Boston Marathon killed at least 3 people and injured more than 180 others, and currently FBI has figured out how it __________.
Seeing her father, the little girl ran to him, her schoolbag_________________behind her.
In order to improve English, ________________.
With his work_________________on time, he felt very excited.
Sarah, hurry up. I’m afraid you won’t have time to__________________before the party.
Children will work actively if_________________.