When he looked up, he suddenly found himself by a group of teenagers,
looked at him anxiously.
| A．to be surrounded; which | B．surrounded; who |
| C．be surrounded; who | D．having been surrounded; which |
Having never met with such a _____ problem, he felt _____ and didn’t know how to solve it.
| A．puzzling; puzzled | B．puzzled; puzzling |
| C．puzzling; puzzling | D．puzzled; puzzled |
Officials believe that more than one person _____ for the big fire.
| A．is to be blamed | B．should blame | C．should be blaming | D．is to blame |
To understand the grammar of the sentence you must break it___ into parts.
| A．down | B．up | C．off | D．out |
Do you think _____ true that _______is hard work that leads to success?
| A．it; it | B．it ; what | C．that; it | D．what which |
Officials believe that more than one person _____ for the big fire.
| A．is to be blamed | B．should blame | C．should be blaming | D．is to blame |