单项选择题
A．keep after a flying target B．hit a flying saucer C．fire straight at a missle D．keep chasing the enemy's tanks
28（）A．tryingB．tryC．trialD．the trial
单项选择题28（）
A．trying B．try C．trial D．the trial
A good plan when fighting against an enemy tank is to （...
单项选择题A good plan when fighting against an enemy tank is to （）
A．shoot its back B．get behind it C．move it to the side D．move out of its way
If you want to get a high score you must first（）A．gain ...
单项选择题If you want to get a high score you must first（）
A．gain the skills of using your guns B．wipe out a score tanks C．hunt a number of enemy's saucers D．kill some supertanks or missiles
