________ (fail) several times, they need some encouragement.
Having failed
暂无解析
Some molecules are large enough ________ (see) under the electronic microscope.
Thistest________anumberofmultiplechoicequestions.
You________gonow.It’sgettinglate.
Those who’d like to visit the exhibition ________ (sign) your names here.
Hardlyhadhefinishedhisspeech________theaudiencestartedcheering.
