Look at this group of people ______ beach volleyball.
A、playedC
现在分词作定语，表示正在进行的动作。
Scientists doubt wheth er it ’s ________ to regulate one ’s biological clock by drinking.
If we had received your L/C, we ______ shipment.
Imports will be allowed in proportion _______ exports.
I ’ve got the order from the boss that the work _______ finished before 5 p.m. today.
We shall can cel the con tract if you fail to ope n the relative L/C ____ the end of this year.
