______ for the breakdown of the school computer network, Alice was in low spirits.
| A．Blaming | B．Blamed | C．To blame | D．To be blamed |
Jack is late again. It is _____ of him to keep others waiting.
| A．normal | B．typical | C．common | D．ordinary |
_____ the flight to New York will be delayed is ____ I'm especially worried about.
| A．If; what | B．Whether; that | C．When; that | D．Whether; what |
Michael Jordan, known as ____ top scorer in _____ NBA, did much charity work for society.
| A．a; a | B．the; the | C．A; / | D．/; the |
---I hear Johnson was badly injured in the accident. ---_____, let's go and see him.
| A．If so | B．Whenever possible | C．If any | D．What's more |
Some researchers believe that there is no doubt ____ a cure for AIDS will be found.
| A．which | B．that | C．what | D．whether |