We had just covered half the journey________the engine failed and we could do nothing but wait for help

ir _______, they all passed theexam.

Why does she always ask you for help?—There is no one else ________, is there[ ]

Jack, you seem in high spirits.— _________ We won the match 4-0.

To my great surprise, I found some strangers ________ at the back of the classroom [ ]