Change the second sentence in each of the following pairs into an adjective clause. Then, make the adjective clause part of the first sentence. You may have to add commas before and after some of the adjective clauses.

3. The West Bank is in the Judeo-Galilean Highlands.
Several mountain ranges run through the Judeo-Galilean Highlands.

My answer: The West Bank is in the Judeo-Galilean Highlands, that several mountain ranges run through.

4. Parts of the Negev Desert are being irrigated to grow crops.

The Negev Desert is the driest part of Isreal.

My answer: Parts of the Negev Desert are being irrigated to grow crops, which is the driest part of Israel.

5. The River Jordan empties into the Dead Sea.
The River Jordan flows through the Rift Valley.

My answer: The River Jordan empties into the Dead Sea, which flows through the Rift Valley.

3. It's o.k. -- except sentences should not end in prepositions. Try again -- incorporating the words "through which."

4. You've misplaced the modifying clause. The crops are not the driest part of Israel.

5. The Dead Sea does not flow through the Rift Valley.

So corrections: (please check)

3. The West Bank is in the Judeo-Galilean Highlands, which several mountain ranges run through.

4. Parts of the Negev Desert, which is the driest part of Israel are being irrigated to grow crops.

5. The River Jordan, which flows through the Rift Valley empties into the Dead Sea.

4. Parts of the Negev Desert, which is the driest part of Israel, are being irrigated to grow crops.

5. The River Jordan, which flows through the Rift Valley, empties into the Dead Sea.

I added the commas are these two correct

3 still ends with a preposition.

4 and 5 are correct now.

Several mountain ranges run through the Judeo-Galilean Highlands, which the West Bank is in.

I don't understand what you mean by incorporating the words ''through which''

The word "in" is also a preposition.

The West Bank is in the Judeo-Galilean Highlands through which several mountain ranges run.

thanks

You're welcome.

3. The West Bank, where several mountain ranges run through, is in the Judeo-Galilean Highlands.

4. Parts of the Negev Desert, which is the driest part of Israel, are being irrigated to grow crops.

5. The River Jordan, which flows through the Rift Valley, empties into the Dead Sea.