试题详情

please ______ your hand if you have any question at all.

If you have any problems during your study here, please do not _______ to call me for help.

t. If you have any questions, please ask our four hostesses(空姐). Would you now please fasten your se

If you ____ your mind, please call me at this number before Saturday.(2.0)

cancer.______(4) If a problem is found,the system would advise you to get a check-up at your doctor