In most countries, the metric system has been _____ for all measurement.
A、admittedD
暂无解析
Tobeginsomeactivityisto_____doingit.
He has made another wonderful discovery, _____ of great importance to science.
Register your name and address on the Web site in order to ____a purchase online.
Theyfulfilledtheplanmuchearlierthanthey_____
Hegavetheorderthatnothing_____untilthepolicearrived.
