We were busy ________ (get) things ready for the trial production when he phoned us.
getting
暂无解析
Onlywhenyouhaveobtainedsufficientdata________cometoasoundconclusion.
Tosucceedinascientificresearchproject________.
This test ________ a number of multiple choice questions.
I know it isn ’t important but I can ’t help ________ about it.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
