-He looks really worried. He be having some problems.
-I guess so. He’s weak in math and physics.
| A．may | B．can | C．must | D．will |
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 |
The purpose of technology is to make it easier, ______ it more difficult.
| A．not make | B．not to make | C．making not | D．do not make |