在两个密闭容器中,分别充有质量相同的甲、乙两种气体,若两容器的温度和压强均相同,且甲的密度大于乙的密度,则下列说法正确的是
The children loved their day trip, and they enjoyed the horse ride ______.
Progress______ so far very good and we are sure that the work will be finished on time.
Charles was alone at home, with_______ looking after him.
It is often ______ that human beings are naturally equipped to speak.