So sudden ______ that the enemy had no time to escape.
| A．did the attack | B．the attack did | C．was the attack | D．the attack was |
He was told it would be at least three months______ he could recover and return to work．
| A．When | B．before | C．since | D．that |
Health problems are closely connected with bad eating habits and a______ of exercise．
| A．limit | B．lack | C．need | D．demand |
----Do you think that the housing price will keep ______ in the years to come? ------ Sorry; I’ve no idea．
| A．lifting up | B．going up | C．bringing up | D．growing up |
____team wins on Saturday will go through to the national championship．
| A．No matter what | B．No matter which | C．whatever | D．Whichever |
So difficult ___it to work out the problem that I decided to ask Tom for advice．
| A．I did find | B．did I find | C．I have found | D．have I found |