33．When problems such as energy crisis, pollution and population explosion_________, people are asked to share the bitterness and endure the hardship with all the whole nation of the times．
| A．are arisen | B．arise | C．arising | D．Arisen |
The driver ________but he wasn’t wearing the seat belt.
| A．survived | B．had survived |
| C．could have survived | D．has survived |
I’m interested in ________ you have said.
| A．all that | B．all what |
| C．that | D．which |
Many people volunteered to donate blood; however, the blood bank needs ________.
| A．some | B．less | C．much | D．more |
________ I admit that all these problems are difficult, I don’t agree that they can’t be solved.
| A．Unless | B．While | C．Until | D．Since |
Tom got to the hospital in time that day, ________the first bus.
| A．catching | B．to have caught |
| C．to catch | D．caught |