Whatever the cause of the heat may be, we do know that the earth gets hotter down we dig.
| A．further | B．the farther | C．the farthest | D．the furthest |
Was it _____he said or something that he did _____ made her cry so sadly?
| A．what; that | B．that; which |
| C．that; what | D．what; / |
---I’d like to buy this book, dad.
---Sorry, my darling, but the book is _____ adults only.
| A．meaning for | B．intended for |
| C．meant to | D．given to |
The two girls are so alike that strangers find ______ difficult to tell them apart.
| A．it | B．them | C．her | D．That |
He is busy now, otherwise he ______ go with you for a walk.
| A．will go | B．go | C．would go | D．would have gone |
Having a trip abroad is certainly good for the old couple, but it remains _____ whether they will enjoy it.
| A．to see | B．to be seen | C．seeing | D．Seen |