根据元素周期律和元素周期表的知识判断,下列说法中错误的是
I tried phoning her office, but I couldn’t _______.
His sister left home in 1998, and _______since.
What do you mean, there are only ten tickets? There _____ be twelve
Could I speak to ______ is in charge of International Sales please?
How much _______ she looked without her glasses!