______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
| A．To attach | B．Attach | C．Attached | D．Having attached |
Her temperature ＿＿＿＿＿＿ to be all right.
| A．seems | B．sounds | C．appears | D．looks |
It sounds ＿＿＿＿＿ the singing of rails.
| A．as | B．in | C．like | D．as if |
It sounds ＿＿＿＿＿ the singing of rails.
| A．as | B．in | C．like | D．as if |
His mother ＿＿＿＿＿ teacher.
| A．became | B．has turned | C．came | D．proved |
Obviously, the old soldier’s knowledge of English＿＿＿very weak.
| A．seems | B．rised | C．remained | D．looked |